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[Bug tree-optimization/47391] [4.5/4.6 Regression] read from const volatile incorrectly eliminated
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 21 Jan 2011 12:58:42 +0000
- Subject: [Bug tree-optimization/47391] [4.5/4.6 Regression] read from const volatile incorrectly eliminated
- Auto-submitted: auto-generated
- References: <bug-47391-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47391
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-21 12:57:55 UTC ---
Author: jakub
Date: Fri Jan 21 12:57:52 2011
New Revision: 169084
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169084
Log:
PR tree-optimization/47391
* varpool.c (const_value_known_p): Return false if
decl is volatile.
* gcc.dg/pr47391.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr47391.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/varpool.c